Bobbin-transferring mechanism



Nov. 27 1923.

- A. LAFLAMME BOBBIN TRANSFERRING MECHANI SM Filed Jan. 23 1923 INVENTOR.

' A TTORNEYA Patented Nov. 27, 1923.

UETE Q raise-as ACHILLE LAFLAMIEIE, OF LAVIJTL-ENCE, MASSACHUSETTS.

BOBBINTBAI TSFEBBING MECHANISM.

Application filed January 23, 1923. Serial No. 614,464.

To aZZ whom it may concern.

Be it known that I, AoHILLn LAFLAMME, a citizen of the United States, residing at Lawrence. in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Bobbin-Transferring Mechanism, of which the following is a specification.

This invention relates to the transferrer of bobbins in looms provided with automatic filling replenishing mechanism.

In looms of this type, the full bobbins are held in the magazine, and when the bobbin in the shuttle is almost empty, automatic mechanism sets in motion what is generally known as a hammer which comes in contact with the butt end of the first full bobbin in the magazine and forces it down against the empty bobbin in the shuttle until the full bobbin takes the place of the empty bobbin. As force to push out the empty bobbin is transmitted through the head of the full bobbin from the hammer, if no other provision were made one or the other bobbin would kick up or down and cause trouble.

To overcome this difficulty, there has been provided at the endof a shaft extending out along the bobbin from the hammer head, de-' pending fingers to rest against the top of the bobbin tip, and various forms of devices to enclose the tip and to grip it at the same time that the pressure is applied to the head so that the bobbin will be held firmly at each end as it is carried down into the shuttle.

My device is of the class of grippers carried at the end of a shaft adapted to automatically seize the tip of the bobbin and hold it until the hammer starts to return to its normal position.

The particular purpose of this invention is to provide a type of grippers, the movement of the jaws of which can b quickly and accurately adjusted.

Another advantage of my device is that with it I can dispense with the bobbin tip support now generally used.

In the drawings, Figure 1 is a side elevation of a hopper stand, hopper, transferrer and hammer, and immediate connected parts of a loom of the well known Northrop type, including part of the lay beam and shuttle, and with'the transferrer mechanism ready to act.

Fig. 2 is a view of the transferrer mechanism at the moment when the new bobbin has been placed in the shuttle.

Fig. 3 is a side elevation of the trans-' as shown in Fig. 1.

Fig. 4 is a front view of the grippers.

Fig. 5 is a sectional view from the right on line 5-5 of Fig. 3.

Fig. 6 is a sectional view as from the right on line 6-6 of Fig. 3.

Fig. 7 is a sectional view as from the right of line 7-7 of Fig. '3.

Fig. 8 is a view similar to Fig. 4 with the fixed gripper arm removed.

Fig. 9 is a view of the carrying shaft with the parts removed.

Fig. 10 is an elevation from the left of ig. 9.

Fig. 11 is an elevation of the push bar and nose alone.

Fig. 12 is a view of another type of nose which might be used.

In the drawings, 1 is the hopper stand from which rises the hopper 2 upon which are rotarily mounted the discs, one of which, 8, is shown. The disc 3 is provided with peripheral seats 4 in which are mounted the butts of the supply of fresh filling carriers B, while the tips are mounted or supported in the opposite disc, not illustrated.

The filling carrier to be transferred is brought by the rotation of the hopper into contactwith the abutment 6 and in this position is held in the hopper by the yielding bobbin support 7 When the running filling breaks or becomes entirely or partially exhausted and filling replenishment is called for, mechanisms are set into operation which cause the transfer of this filling carrier resting against the abutment 6 from the hopper downwardly into the shuttle which is then on the lay and beneath the hopper, the spent filling carrier being simultaneously ejected.

The immediate instrumentality concerned in the transfer is the so-called transferrer which is herein shown as pivotally mounted at 8 on the hopper stand, and of the shape of a bell crank lever. The transferrer projects between the discs of the hopper and in its normal inactive position the head9 of the transferrer extends directly above the butt of the filling carrier in position for transfer.

L is the lay beam which carries the shuttle S in a well known manner.

20 is a carrying shaft fixed to the head 9 in any suitable manner, which may be by means of nuts 70 shown in Fig. 3. It extends out to a point directly over the tip 13 of a bobbin B, whose head 14 comes directly under hammer 9.

Near its end, shaft 20 has a stop member 21 which cooperates with a slideway 22, which slideway extends up and down in a substantially vertical position and serves as a guide for the push bar which has a slot 56 of the same width as slideway 22 but somewhat longer.

Beyond the slideway is a pivot part 23 upon which is mounted the movable arm. 30, and beyond this is squared portion 24 on which is mounted the fixed arm 40.

The movable arm 30 extends upward at 31 where it is squared, and on the inside has a groove 34 to help guide nose 54. It is grooved in a semi-circular form at 32 to register with the male curved member 42 form ing part of fixed arm 40. r

This arm 40 has a squared hole 44 which fits over the squared end 24 and is held in position by means of a split pin 26 passed through hole 25. The upper part 41 of arm 40 serves as a stop for the portion 31' of arm 30.

The fixed arm 40 extends downward into a fixed jaw 43 which cooperates with the movable jaw 33 carried by arm 30.

The push bar 50 is slidable on slideway 22 and extends down to bottom end 51 where it is shaped to partly conform to the contour of a bobbin tip with which it is to engage.

In the upper portion is an adjusting slot 52 through which passes an adjusting screw 53 into the nose 54. It is apparent that by loosening the screw 53, nose 54 can be adjusted along slot 52. This nose 54 fits into a cutaway part of movable arm 30 at 36 which slopes in such manner that when push bar 50 and nose 54 are pushed upward, as shown in Fig. 7, the movable jaw 33 closes against the bobbin B.

It is obvious that by shifting the position of nose 54 the movement of this jaw can be regulated.

In a suitable recess 84 in the curved portions 32 of arm 30 and 42 of arm 40, I place a returning spring 11 which tends to keep the aws 33 and 43 apart and the parts 31 and 41 together.

As shown in Fig. 12, instead of a triangular nose, such as 54, I can use a round nose 80 and adjusting screw 81.

The dotted part marked 10 is the tip support with which I dispense.

I claim:

1. In a transferring mechanism for automatic filling replenishing looms, the combination with a shaft having a stop memher, a slideway, a pivot part and a squared end; of a downwardly extending arm fixed to the squared part of the shaft and termi nating in afixed aw; a movable arm pivoted on the pivot part of the shaft adjoining the fixed arm and terminating in a movable jaw and also having a recess with a. sloping edge; a spring to normally keep the movable jaw away from the fixed aw; a push bar slidable on the slideway of the shaft and having an adjusting slot; a nose which engages said sloping edge, and means to adjust said nose along said slot in the push bar.

2. In a transferring mechanism for automatic filling replenishing looms, the combination with a shaft; of a downwardly extending arm fixed to the shaft and terminating in a fixed jaw; a movable arm pivoted on the shaft adjoining the fixed arm and terminating in a movable jaw and also having a recess with a sloping edge; a spring to keep the movable jaw away from the fixed jaw; a push bar slidable on the shafi; a nose which engages said sloping edge, and means to adjust said nose along the push bar.

ACHILLE LAFLA'MME. 

